When to go
The Best Time to Visit San Juan
Month-by-month climate data for San Juan, Puerto Rico — daily highs and lows, rain days, and an honest verdict for every month of the year.
December–April. Dry season with 26-30°C days and cool nights. Skip peak hurricane season (August-October); April-May and November are shoulder weeks with great rates.
Warmest in San Juan: Jun (32°C / 90°F) · Coolest: Jan (28°C / 82°F) · Wettest: Sep (~22 rain days)
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)
San Juan climate, month by month
January
28° / 22°C
~15 rain days
Good
February
28° / 22°C
~17 rain days
Good
March
28° / 22°C
~17 rain days
Good
April
29° / 23°C
~18 rain days
Good
May
31° / 24°C
~18 rain days
Fair
June
32° / 25°C
~19 rain days
Fair
July
31° / 25°C
~21 rain days
Fair
August
31° / 25°C
~19 rain days
Fair
September
31° / 25°C
~22 rain days
Fair
October
30° / 25°C
~20 rain days
Fair
November
29° / 24°C
~18 rain days
Good
December
28° / 23°C
~17 rain days
Good
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